One of my major complaints on the Lumia 950 was the wonky autofocus function for the camera.
But that seems to be fixed now as Microsoft just rolled out a new update to the Windows camera app.
The new version is 2015.1201.41.0 and it fixes the faulty autofocus on the camera app. till now the only way you could get the autofocus to work was to NOT use it at all and go manual focus.
But with this update, autofocus is now functioning properly now.
Lumia 830 users are also reporting improvements to focus in the camera app as well.